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Thousands of Servers Infected With New Lilocked (Lilu) Ransomware

Longtime Slashdot reader Merovech shares a report from ZDNet: Thousands of web servers have been infected and had their files encrypted by a new strain of ransomware named Lilocked (or Lilu). Infections have been happening since mid-July, and have intensified in the past two weeks, ZDNet has learned. Based on current evidence, the Lilocked ransomware appears to target Linux-based systems only. The way the Lilocked gang breaches servers and encrypts their content is currently unknown. A thread on a Russian-speaking forum puts forward the theory that crooks might be targeting systems running outdated Exim (email) software. It also mentions that the ransomware managed to get root access to servers by unknown means.

Lilocked doesn’t encrypt system files, but only a small subset of file extensions, such as HTML, SHTML, JS, CSS, PHP, INI, and various image file formats. This means infected servers continue to run normally. According to French security researcher Benkow, Lilocked has encrypted more than 6,700 servers, many of which have been indexed and cached in Google search results. However, the number of victims is suspected to be much much higher. Not all Linux systems run web servers, and there are many other infected systems that haven’t been indexed in Google search results.
Why it should scare you:- affects Linux servers- so far the vector of infection / vulnerability is unknown- you can craft a Google search to watch it spread!


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